Is your feature request related to a problem? Please describe.

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for compat with the mods connectable chains, all chains need the chains tag from forge to be recognized by the code as a connectable one.

Describe the solution you'd like

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just tag all the chains in the mod with the forge chain tag forge:chains

all chains need the chains tag from forge

Neither Forge nor NeoForge seems to have an item or block tag for chains.
https://github.com/MinecraftForge/MinecraftForge/blob/1.20.x/src/main/java/net/minecraftforge/common/Tags.java#L32
https://github.com/neoforged/NeoForge/blob/1.20.x/src/main/java/net/neoforged/neoforge/common/Tags.java#L24

As far as I can tell, the only tag used by Connectible Chains is an item tag c:chains https://github.com/lilypuree/ConnectibleChains/blob/1.20.1/src/main/resources/data/c/tags/items/chains.json

oh huh I wonder how that can be added